JPH0329835B2 - - Google Patents
Info
- Publication number
- JPH0329835B2 JPH0329835B2 JP55033599A JP3359980A JPH0329835B2 JP H0329835 B2 JPH0329835 B2 JP H0329835B2 JP 55033599 A JP55033599 A JP 55033599A JP 3359980 A JP3359980 A JP 3359980A JP H0329835 B2 JPH0329835 B2 JP H0329835B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- transition temperature
- molded product
- external force
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000007704 transition Effects 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000003566 sealing material Substances 0.000 description 12
- 238000012856 packing Methods 0.000 description 10
- 238000007789 sealing Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- -1 polyethylene Polymers 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Sealing Material Composition (AREA)
Description
【発明の詳細な説明】
本発明は、封止方向に膨張することによつてパ
ツキンあるいはシーリング効果を発揮する封止材
の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a sealing material that exhibits a packing or sealing effect by expanding in the sealing direction.
従来の封止材は、しめつけ、おしつぶし等の機
械的外力を、これに与えて変形によりパツキン、
シーリング効果を得るものであつたが、作業者の
熟練度によつて加える機械的外力が異なるため十
分な効果が期待できないことがあつた。 Conventional sealing materials are deformed by applying mechanical external force such as tightening or crushing to the sealing material.
Although the sealing effect was obtained, a sufficient effect could not be expected because the external mechanical force applied differed depending on the skill level of the operator.
本発明者らはこの点にかんがみ鋭意検討した結
果、封止材そのものが封止方向に膨張して、均一
なパツキン、シーリング効果が期待できる封止材
を作ることができ本発明を完成した。 In view of this point, the inventors of the present invention made extensive studies, and as a result, the present invention was completed by creating a sealing material in which the sealing material itself expands in the sealing direction and can be expected to have a uniform packing and sealing effect.
すなわち、本発明は少なくとも50℃以上の転位
温度を有する高分子材料、またはこれを配合成分
として含有する混合物を用いて一次成型品をつく
り、これに該転移温度以上の温度および外力を加
えて二次成型品とし、ついでその際の外力を保持
したまま該転移温度以下の温度まで冷却した後、
外力を開放することを特徴とする封止剤の製造方
法に係るものである。 That is, the present invention involves making a primary molded product using a polymeric material having a transition temperature of at least 50°C or higher, or a mixture containing this as a compounding component, and then applying a temperature higher than the transition temperature and an external force to the molded product. After forming the next molded product and cooling it to a temperature below the transition temperature while maintaining the external force at that time,
The present invention relates to a method for producing a sealant characterized by releasing external force.
本発明における転移温度は、高分子物理におい
て規定されるものより狭く、ガラス転移点、軟化
点または結晶融点等の材料物性、特に弾性率が顕
著に変化する温度特性をさすのである。転位温度
を50℃以上と規定するのは、パツキン、シール材
等の封止材の保管温度が通常の条件下でも40℃程
度はありうること、この程度の温度が長期間保持
されると、封止材が保管中に膨張してしまうおそ
れがあるためである。この点から転移温度は50℃
よりも高い方が好ましい。しかしながら、転移温
度が高いと二次加工温度も高くなり、パツキン等
を膨張させる温度も高くなるので、通常の封止材
では80〜100℃であることが望ましい。 The transition temperature in the present invention is narrower than that defined in polymer physics, and refers to temperature characteristics at which material properties such as glass transition point, softening point, or crystal melting point, particularly elastic modulus, change significantly. The reason why the transition temperature is defined as 50℃ or higher is that the storage temperature of sealing materials such as packing and sealing materials can be around 40℃ even under normal conditions, and if this temperature is maintained for a long period of time, This is because the sealing material may expand during storage. From this point, the transition temperature is 50℃
Higher is preferable. However, if the transition temperature is high, the secondary processing temperature will also be high, and the temperature at which the packing and the like will be expanded will also be high, so it is desirable that the temperature is 80 to 100°C for ordinary sealing materials.
このような転移温度を有する高分子物質として
は、数多くのものがあり、例えば次のようなもの
があげられる。 There are many polymeric substances having such a transition temperature, including the following.
結晶融点が利用できる物質：
ポリエチレン、ポリプロピレン、結晶性シリコ
ーンレジン等
ガラス転位温度が利用できる物質：
ポリ塩化ビニル、ポリエチレンテレフタレー
ト、ポリカーボネート等
本発明では上記物質そのまゝか、これを化学成
分として含有するコポリマー、あるいは配合成分
として含有する材料のいずれかを使用して、一次
成形物を作るのであるが、この成形品は基本的に
は膨張後の本発明の封止材の構造をもつものであ
る。Substances for which crystal melting point can be used: polyethylene, polypropylene, crystalline silicone resin, etc. Substances for which glass transition temperature can be used: polyvinyl chloride, polyethylene terephthalate, polycarbonate, etc. In the present invention, the above substances are used as they are, or they are contained as chemical components. A primary molded product is made using either the copolymer or the materials contained as compounded components, and this molded product basically has the structure of the sealing material of the present invention after expansion. .
この一次成形物を材料の転移温度以上の温度に
あたため、外力を加えて二次成形し、その外力を
保持したまゝ、転移温度以下の温度に冷却するこ
とによつて、パツキン等の封止材が得られる。 This primary molded product is heated to a temperature higher than the transition temperature of the material, subjected to secondary molding by applying an external force, and cooled to a temperature lower than the transition temperature while maintaining the external force, thereby sealing packing etc. wood is obtained.
この場合に加える外力は、一次成形物を収縮変
形させて二次成形物にするもので、外力の方向は
パツキン等の膨張による封止方向の反対である。 The external force applied in this case shrinks and deforms the primary molded product to form a secondary molded product, and the direction of the external force is opposite to the direction of sealing due to expansion of the packing or the like.
二次成形物に外力を加えたまゝ転移温度以下の
温度まで冷却すると、外力を除いた後も、その形
態で記憶が固定され、再びこれを転移温度以上に
あたためると膨張して一次成形物の形態にもど
る。 If the secondary molded product is cooled to a temperature below the transition temperature while applying an external force, it will remain in that form even after the external force is removed, and when it is heated again above the transition temperature, it will expand and become the primary molded product. Return to form.
本発明の封止材はこの際の膨張力が封止方向に
はたらくので、優れたパツキンあるいはシーリン
グ効果を発揮する。 The sealing material of the present invention exhibits an excellent packing or sealing effect because the expansion force at this time acts in the sealing direction.
本発明に用いる材料が加硫ゴムや架橋プラスチ
ツクの場合は、二次成形温度をかなり高温にして
も問題はないが、その他の材料の場合は材料の融
点よりも高くすることはできない。 When the material used in the present invention is vulcanized rubber or cross-linked plastic, there is no problem even if the secondary molding temperature is considerably high, but in the case of other materials, it cannot be made higher than the melting point of the material.
次に実施例をあげて本発明を説明する。 Next, the present invention will be explained with reference to Examples.
実施例 １
エチレン比率約80％のエチレン−プロピレンゴ
ム（メルトインデツクス10）100重量部にジクミ
ルパーオキサイド２重量部を配合した材料を160
℃、30分モールド成形して、外径50mm、内径40
mm、肉厚３mmのＯ字形加硫パツキンを作り、この
ものを120℃に加熱して外径52mmの型に入れ、圧
縮して肉厚1.8mmとし、30℃まで冷却した、これ
は外径52mm、内径35mmのＯ字形パツキンである。Example 1 A material prepared by blending 2 parts by weight of dicumyl peroxide with 100 parts by weight of ethylene-propylene rubber (melt index 10) with an ethylene ratio of approximately 80% was made into 160 parts by weight.
℃, molded for 30 minutes, outer diameter 50mm, inner diameter 40mm
An O-shaped vulcanized gasket with a thickness of 3 mm and a wall thickness of It is an O-shaped packing with a diameter of 52mm and an inner diameter of 35mm.
これは80℃以上になると、温度によつて回復速
度は異なるが、肉厚３mm、外径50mm、内径40mmに
なり肉厚が約67％膨張する。 When the temperature exceeds 80°C, the recovery speed varies depending on the temperature, but the wall thickness becomes 3 mm, outer diameter 50 mm, and inner diameter 40 mm, and the wall expands by about 67%.
したがつてこのパツキンを瓶詰食品等の容器に
使用すれば、過大な機械力で、しめつけることな
く、高温殺菌処理の温度によつて肉厚が膨張し、
完全なパツキン効果が発現できる。 Therefore, if this packing is used for containers such as bottled foods, the wall thickness will expand due to the temperature of high-temperature sterilization without being tightened by excessive mechanical force.
Full Patsukin effect can be achieved.
実施例 ２
エチレン比率60％のエチレンプロピレンゴム
（メルトインデツクス15）100重量部にポリエチレ
ン（Ｄ＝0.94、メルトインデツクス1.5）30重量
部を練りこみ、これにジクミルパーオキサイド２
重量部を配合した材料を120℃で押出し、160℃、
30分で架橋し、全長30mm、内径が15mmで、外径が
両端部10mmで21mm、中央部10mmで18mmの一次成形
物を作つた。次にこのものに外径14.5mmの金属棒
を通し、120℃に加熱した後、外径18.3mmの型に
入れ加圧二次成形し、40℃以下の温度まで冷却し
て内経約15mm、外径約14mm、長さ52mmのスリーブ
を作つた。Example 2 30 parts by weight of polyethylene (D = 0.94, melt index 1.5) was kneaded into 100 parts by weight of ethylene propylene rubber (melt index 15) with an ethylene ratio of 60%, and dicumyl peroxide 2 was added to this.
Extrude the material containing parts by weight at 120℃, 160℃,
Crosslinking took place in 30 minutes to produce a primary molded product with a total length of 30 mm, an inner diameter of 15 mm, an outer diameter of 21 mm at both ends of 10 mm, and an 18 mm outer diameter of 10 mm at the center. Next, a metal rod with an outer diameter of 14.5 mm is passed through this material, heated to 120 degrees Celsius, placed in a mold with an outer diameter of 18.3 mm, subjected to secondary molding under pressure, and cooled to a temperature below 40 degrees Celsius, with an inner diameter of approximately 15 mm. , I made a sleeve with an outer diameter of about 14 mm and a length of 52 mm.
このスリーブは、外径17mm程度の電線を隔壁に
貫通させる場合の保護シール管として用いること
ができる。 This sleeve can be used as a protective seal tube when an electric wire with an outer diameter of about 17 mm is passed through a partition wall.
すなわち、ケーブルにこのスリーブを装着して
隔壁貫通孔に通し、スリーブ両端部を80℃以上の
熱風であたためるとスリーブは両端部で肉厚が膨
張するので電線を保護固定することができた。 In other words, when this sleeve was attached to a cable, passed through a partition wall through-hole, and both ends of the sleeve were heated with hot air of 80°C or higher, the thickness of the sleeve expanded at both ends, making it possible to protect and fix the wire.
実施例 ３
ポリエチレンフタレート（平均分子量25000）
に熱分解ガス発生タイプの発泡剤としてアゾビス
イソブチロニトリル２重量部を添加した材料から
一次成形によつて、内径15mm、外径21mm、肉厚10
mm、空孔度４％程度のそろばん玉パツキンを作つ
た。このものを200℃のシリコーン油中に投入し、
約100Kg／cm2（ゲージ圧）に加圧し急速に冷却す
ると三次元的に変形した内径16.5mm、外径20mm、
肉厚7.5mmの二次成形物を得た。このものは120℃
程度に加熱すると三次元膨張するので、はめ込み
あるいは埋め込み型シール材として有用である。Example 3 Polyethylene phthalate (average molecular weight 25000)
2 parts by weight of azobisisobutyronitrile as a pyrolysis gas-generating foaming agent was added to the material to form a material with an inner diameter of 15 mm, an outer diameter of 21 mm, and a wall thickness of 10 mm.
We made an abacus ball packing with a diameter of 4.5 mm and a porosity of about 4%. Pour this into silicone oil at 200℃,
When pressurized to approximately 100Kg/cm 2 (gauge pressure) and rapidly cooled, it becomes three-dimensionally deformed, with an inner diameter of 16.5 mm and an outer diameter of 20 mm.
A secondary molded product with a wall thickness of 7.5 mm was obtained. This one is 120℃
Since it expands three-dimensionally when heated to a certain degree, it is useful as an inset or embedded sealing material.
Claims (1)
子材料、またはこれを配合成分として含有する混
合物を用いて一次成型品をつくり、これに該転移
温度以上の温度および外力を加えて二次成型品と
し、ついでその際の外力を保持したまま該転移温
度以下の温度まで冷却した後、外力を開放するこ
とを特徴とする封止剤の製造方法。1. A primary molded product is made using a polymeric material with a transition temperature of at least 50°C or higher, or a mixture containing this as a compounded component, and then a secondary molded product is created by applying a temperature higher than the transition temperature and an external force. , and then cooling to a temperature below the transition temperature while maintaining the external force, and then releasing the external force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3359980A JPS56129283A (en) | 1980-03-17 | 1980-03-17 | Sealing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3359980A JPS56129283A (en) | 1980-03-17 | 1980-03-17 | Sealing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56129283A JPS56129283A (en) | 1981-10-09 |
| JPH0329835B2 true JPH0329835B2 (en) | 1991-04-25 |
Family
ID=12390942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3359980A Granted JPS56129283A (en) | 1980-03-17 | 1980-03-17 | Sealing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56129283A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021205887A1 (en) | 2020-04-10 | 2021-10-14 | 日本酢ビ・ポバール株式会社 | Sustained release base |
-
1980
- 1980-03-17 JP JP3359980A patent/JPS56129283A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021205887A1 (en) | 2020-04-10 | 2021-10-14 | 日本酢ビ・ポバール株式会社 | Sustained release base |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56129283A (en) | 1981-10-09 |
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